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(No Model.) V 2 Sheets8heet 1. 8 F. SOUTHGATE.

MACHINE FOR FORMING SEAMLESS RUBBER GOODS. No. 375,778 Patanted Jan. 3, 1888.

INVENTOR- ATTORNEYS.

N. FETER$ Phclo-Liihognplwr, Washington, 0,6.

(No Model.) v 2 Sheets-Sheet 2.

' F. SOUTHGATE.

MACHINE FOR FORMING SEAMLBSS RUBBER GOODS. No. 375,778. Patented J an. 3, 1888. y

INVENTOI? UNITED STATES PATENT OFFICE.

FREDERICK SOUTHGATE, OF PARlS, FRANCE.

MACHINE FOR FORMING SEAMLESS RUBBER GOODS.

SPECIFICATION forming part of Letters Patent No. 375,7 78, dated January 3, 1888.

Application filed January 28, 1887. Serial No. 225,747. (No mod l.) Patentedin England July 22, 1850, No. 9,509.

To all whom it may concern:

Be it known that I, FREDERICK SOUTHGATE, of the city of Paris, France, have invented an Improved Machine for Forming Seamless Rubber Goods, (for which I have obtained Letters Patent in England, No. 9,509, dated July 22, 1886,) of which the following is a full, clear, and exact description.

This invention relates to the manufacture of water-proof armpitlinings, known as dressprotectors, and the invention consists in new machinery for the manufacture of such waterproof dress-protectors without seams orjoints at the curved part, as hereinafter described. The water-proof fabrics to be manipulated in said machinery are coated with caoutchouc in the usual way, and may be either single or double texture fabrics-that is to say, the caoutchouc or india rubber may be applied on one surface of a fabric or between two thicknesses of fabric, as is well known. In either case the rubber-coated fabrics are cut up in strips following the warp of the fabric, the strips being then superposed to the number of, say, forty-eight, and the pile stamped or cut out into pieces of a truncated oval form and of an area equal to the material necessary for the development of the crescent of the dressprotector. The vulcanization of the rubbercoated White or colored surfaces is efiected by any one of the usual means or manners of vulcanization already known in the manufacturing of rubber.

In the accompanying drawings, forming part of this specification, Figure 1 is an end elevation of my improved machine; Fig. 2, a plan or top view of the same. Fig. 3 is a vertical section of the machine in the line 0 c, Fig. 2. Fig. 4 is a horizontal section on the line k, Fig. 3, the parts (1 being omitted. Fig. 5 is aside elevation of the machine. Fig 6 is a detail section on line k k, Fig. 5. Fig. 7 is a detail, partly in section; and Fig. 8 is an enlarged vertical cross-section of the lower die and adjoining plates.

A is the base-plate, whereon are suitably secured the uprights a.

B and D are two heating-boxes, having curved tops, the one, B, being fixed to the bed-plate A, and the other box, D, being fitted to work on the bed-plate A, between rails b,

and may be moved from or to the fixed box B by means ofcurved slotted cams d d on a shaft, e, engaging with pins ff on said box D, said cams being worked by lever g. The shaft 2 is carried by arms h h, fixed adjustably in guides on the fixed box 13. the adjustment being effected by screws i i, the arms being held by set-screws. The adjacent upright walls of the heating-boxes B and D are faced with movable plates j.

The boxes B and D are heated by steampipes, that are connected by brackets Z. Between the plates j of the heating-boxes B and D is a lower sliding die, m, of the curved form shown in half elevation in Fig. 6.' This die is a flat plate with a groove, n, in its curved upper edge, and is furnished at the lower sides with arms 0, which pass into guide slots p in the uprights a. The arms 0 are attached to spiral springs (1 within the uprights a,by means of which the lower die, m, is raised at the proper moment, as hereinafter described. The upper ends of the springs qare suitably'secured to the uprights a. This die m is held down by a pawl, 1', on a rock-shaft, s, worked by a lever, t. (Shown in Fig. 7.) The die in is preferably made of steel, with an opening at the middle of its flat part to prevent warping by heat.

E is an upper die, which has its lower edge curved to correspond to the upper edge of the die m. The die E is fitted to slide in guides to on the uprights a, and is attached to a rack, 11, which gears with a pinion, w, on a shaft, .1 mounted in the bridge F, said shaft being worked by hand-wheel y, or any other suitable contrivance. This upper die, E, is held in the raised position, preferably by counterbalance-weight acting through a cord running over pulleys a N. This upper die, E, works between the face'platesj of the boxes B D,and

is brought down upon the lower die, m.

The operation of the machine is as follows: The heating-boxes B D being pushed together as near as possible and heated to a proper temperature the pieces of fabric cut out to a truncated oval shape, suited to form a dressprotector when folded, as hereinafterdescribed, are laid upon the curved surfaces of the heated boxes B D between guides d d, fixed adj ustably thereon. An envelope is then applied to the two faces of the upper die, E, in order to permit the fabric to be forced down between the boxes B and D in a regular manner and without wrinkling. The die E being then brought down by turning wheel y, the fabric is doubled and forced down between the boxes B and D, and pressed between the curved edges of the upper and lower dies, E and m, and into the groove of the lower die, m. The descent being effected,the lower die is retained by the pawl r. The material is kept under pressure between the heated boxes B D .for about a minute, after which the pawl r is released and the movable box D moved outward by the cam d, the pressed article being thereupon raised by the spring q,drawing the lower die, m, upward. To prevent adhesion of the fabric, the caoutchouc is dusted over with powdered talc, soap, or flowers of sulphur.

Having now described my invention, what I claim is- 1. In a machine for the manufacture of armhole-linings by means of a pair ofheated boxes,

' the one fixed and the other movable, the mechanism for operating the latter consisting of the straps h, fixed adjustably in guides, the cam d, keyed on shaft e, carried in said straps, and screws i, for adjusting said movable box to suit the thickness of the fabric, as described. 2. In a machine for the manufacture of armhole-linings by means of heat and pressure, the mechanism for operating the upper knife or die, consisting of a rack, a, pinion w, handwheel 3 pulleys a and b, and counterbalanceweight, as described, for the purpose specified.

3. In a machine for the manufacture of armhole-linings by heat and pressure, the combination, with the curved lower knife or die, m, as described, of the arms 0, for attaching the spiral springs q, contained in the uprights a, and of the pawl r, in connection with said arms 0, as described, for the purpose specified. The foregoing specification of my improved machine for forming seamless rubber goods signed by me this 4th day of October, 1886.

FREDERICK SOUTHGATE.

Witnesses:

ROBT. M. Hoornn, J os. B. BOURNE. 

